Curricular Unit:			Code:
Water and Wastewater Treatment			823TAAR
Year:	Level:	Course:	Credits:
3	Undergraduate	Environmental Engineering	7 ects
Learning Period:		Language of Instruction:	Total Hours:
		Portuguese/English	91
Learning Outcomes of the Curricular Unit:
The most common operations e processes that integrate the treatment of public water supply systems and wastewater will be addressed. It also will be processed, with a professional approach of subjects, some calculation exercises for the purpose of sizing water and wastewater treatment systems and also for a better understanding of matter. Implementation of experimental procedures allowing water analyses, and through the results obtained, select and interpret relevant information in order to, for example, draw conclusions about compliance or not with the legislation or better or worse functioning of a particular water treatment step. Execution of Treatability studies relating to wastewater, especially of physic-chemical processes.
Syllabus:
Lecture 1. Introduction 1.1. Flowrates. 1.2. Physical, Chemical and Biological Characteristics of Wastewater. 1.3. Quality Criteria. Legislation. 1.4. Water and Wastewater treatment systems. 2. Physical Operations. 2.1. Flow Measurement. 2.2. Screening. 2.3. Comminuting. 2.4. Equalization. 2.5. Grit removal. 2.6. Mixing/Aeration. 2.7. Flotation. 2.8. Sedimentation. 2.9. Filtration. 3. Chemical Process. 3.1. Chemical Precipitation. 3.2. Softening. 3.3. Desinfection. 3.4. Adsorption. 4. Biological Process. 4.1. Aerobic Treatment Process. 4.2. Anaerobic Treatment Process. 4.3. Nutrient Removal. 4.4. Lagooning Processes. Laboratory 5.1. Analytical methods. 5.2. Jar-test and other experiments of water treatment.
Demonstration of the Syllabus Coherence with the Curricular Unit's Objectives:
The contents are intended to carry out the approach of materials and skills necessary for the understanding of the operation of a water treatment system, the knowledge of “how it works” and in what situations apply. Are also addressed some simple ways of sizing the equipment used. On the other hand, a water treatment system assumes the obtaining or the existence of waters with specific quality, which is regulated through several specific lays, which are used in exercises to verify the conformity or not of certain samples of water in the face of a determined use. The know-how is reinforced in the laboratory lessons, where different analytical methods are wxecuted on different waters brought by the students a teacher, which also serve to check their suitability for a particular use. It follows, in wastewater waters, and in accordance with the results obtained, the choice of treatment method and its implementation.
Teaching Methodologies (Including Evaluation):
Expository, demonstrative and interrogative during classes and study orientation sessions, in order to allow interpret and apply the acquired knowledge to real situations. In practical classes, students perform protocols, associated with the analytical methods or the treatability (Jar-Test). The assessment takes place continuously during the theoretical classes, through the realization of mini-tests (A) and student participation (B).In the PL component, multiple choice cards ou others (D), synthetic reports (C), a study visit or participation in environmental event (E) and student performance / participation in classes (F) are evaluated. Final classification = arithmetic mean (TP and PL component) (1) Component TP = 0.90 * A + 0.10 * B (2) Practical-laboratory component = 0.50 * C + 0.20 * D + 0.10 * E + 0.20 * F (3) During the examination period the TP component is recovered and formula (1) is applied, provided that the PL component is positive.
Demonstration of the Coherence between the Teaching Methodologies and the Learning Outcomes:
The teaching-learning methodologies in this curricular unit were programmed in order to promote the practical application of theoretical concepts. Through the methodologies used, the contact time of the teacher in class is mainly used in the transmission of knowledge key associated with each unit, usually the respective practical application, in order to contribute to the understanding of the object of analysis. At the same time, and through an informatics platform, students seek to respond to jobs that are available and that reinforce students ' learning in the themes addressed. On the other hand, in laboratorial classes, the methodology used leads the student to analyze the results obtained,the search and find explanations for them and to relate different concepts. Also in these classes, the experimental procedures enable the student to acquire a know-how which is only possible with the contact with experimentation. These methodologies seek to help the student gain specific skills such as: • identify and understand a water treatment process; • select and analyse information on treatment processes, technologies and some of the equipment to be used; • identify and resolve some of the problems of water treatment processes; • participate in the operation and maintenance of water treatment processes; •perform calculations relating to the sizing of some equipment related to water treatment processes; • identify and analyze legislation on the quality of water supply and waste-water; • carry out environmental quality monitoring-monitoring and surveillance systems, for example, assessing water quality and propose solutions to possible anomalies detected; • analyse, through standard methods, the physic-chemical characteristics of water; • check the values of the parameters of the treatment processes, making sampling of water in various stages of the treatment process and further analysis; • perform wastewater Treatability tests.
Reading:
[1] Metcalf and Eddy. (2003). Wastewater Engineering, Treatment and Reuse, McGraw-Hill. [2] Viessman, W., Hammer, M. (1998), Water Supply and Pollution Control, Addison-Wesley. [3] McGhee, T.J. (1991), Water Supply and Sewerage, McGraw-Hill. [4] Peavy, H.S., Rowe, D.R., Tchobanoglous, G. (1985), Environmental Engineering, McGraw-Hill. [5] Kiely, G., Ingeniería Ambiental (2001), McGraw-Hill. [6] The Nalco Water Handbook (1987), (2ºEd), McGraw-Hill. [7] AWWA (1998), Water Treatment Plant Design. [8] AWWA (1999), Standard Methods for the Examination of Water and Wastewater, 20th ed. APHA. [9] World Health Organization (WHO) (2011). Guidelines for drinking-water quality. [10] World Health Organization (WHO) (2008). Safer Water, Better Health.